body {
    margin: 0px;
    background-color: #f8f9fa!important;
}

.back {
    background-image: url(../../images/login/loginback.jpg);
    background-repeat: no-repeat;
    background-position: center;
    background-size: 1960px 600px;
    width: 100%;
    height: 600px;
    /* background-color: aqua; */
    display: flex;
    justify-content: center;
}

.login {
    position: relative;
    left: 400px;
    top: 100px;
    background-color: #fff;
    width: 350px;
    height: 420px;
    padding: 50px 0;
    text-align: center;
    border-radius: 15px;
    box-shadow: 8px 8px 17px #888888;
}

.usernameinput {
    display: inline;
    height: 50px;
    width: 240px;
    background-color: transparent;
    border: transparent;
}

input:focus {
    outline: none;
    border: transparent;
}

.pwdinput {
    display: inline;
    height: 50px;
    width: 240px;
    background-color: transparent;
    border: transparent;
}

.inputbox {
    background-image: url("../../images/login/边框_u5.png");
    background-repeat: no-repeat;
    background-position: center;
}

img {
    margin-right: 5px;
    margin-bottom: 5px;
}

button {
    width: 300px;
}